The correct way to behave around others. Etiquette is different among different cultures. It is important to have because it shows that you are serious about your work and people will respect you.
Professionalism is the way you carry yourself in a workplace. It is important to have because it shows integrity and that you are an efficient worker.
Tact is the ability to be sensitive in a difficult situations and knowing what to say at the right time. It is important to be tact because it shows that you can control yourself, you don't act on impulse and you think about what you say before you say it.
Punctuality is being on time, showing up to work or other places on time and doing work on time. It is important to be punctual because it shows that you care about your work.
Having a positive attitude is being optimistic, looking for the positive in every situation. It is important to be positive because it keeps you motivated to work.